<script type="text/javascript">
$('form').submit(function(){
startDate = $("input[name='start_date']").val();
endDate = $("input[name='end_date']").val();
if( endDate < startDate ){
alert("End Date must be larger than the Start Date. Please try again.");
$.unblockUI();
return false;
}else{
return true;
}
});
</script>
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